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Old 05-03-2011, 08:47 PM   #1
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How do I regear my Jeep? Has 3.07 gears.

My 88 has 3.07 gears in it. (I believe it has the dana 30 and 35).
It has a tired 4.2L in it. I am also running 35" Baja Claws. Needless to say, I have broken tons of u-joint staps.

Right now it's geared so high I rarely use 4th gear....and never 5th gear.
I want it to be lower geared for cruising around on highways and putting up gravel roads for hunting...not so much freeway and not for rock crawling.

So...
1. What gear ratio do you all reccomend? I was thinking 4.11, what about 4.56?

2. How to go about it on a budget, but the right way? Buy used axles and roll the dice or buy new gears?

3. Any write ups on this?

anything will help, gearing is not my strong point.

Thanks!

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Old 05-03-2011, 11:50 PM   #2
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Old 05-04-2011, 04:58 AM   #3
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I just recently went from 3.07 to 4.56 in my 91 YJ running on the same tires... Amazing differences!! I went from barely being able to sustain 55 on the highway to holding 80 in fifth gear effortlessly. I still have plenty of low-end power also.

Most places here in Connecticut wanted to charge about +/- $2000. I found a guy here in CT that pointed me to Adams Drive Shaft out of Nevada (Adams Driveshaft, Inc. - Home) They sold me all the parts I needed for about $600. Then the mechanic here in CT installed them for $850 ($425/axle) all in all I saved around $600.

You will need Ring and Pinion gears front and rear, New Carrier for front and rear rebuild kits for front and rear. All of these I one stopped shopped from the website above and then I needed about 8 qts of 80/90W gear oil.

Because it cost so much if I had to do it again, I would but in the future I will buy a jeep that has already had the gears swapped out If you have big tires, new gears are a must!!
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Old 05-04-2011, 06:48 AM   #4
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just try to find a yj with a 4 cyl and get the axles out of it. they come with 4.10 gears. that would be easier and and cheaper than regearing.
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Old 05-05-2011, 12:53 AM   #5
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Every bit of this information is helping. Thanks! Any of you have any opinions about the Ford 8.8? I know a guy who got one out of an Explorer...
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Old 05-05-2011, 06:57 AM   #6
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a few guys in my club went 8.8 and they love it. they were regularly breaking chromoly shafts in the d35 with 33s, but they were locked and running 4.88 gears. im going straight to 1 tons personally but i want 38s or 40s. if your going to stick to 33s or 35s a 8.8 will be good. a lot of them come with 4.10s and disc brakes also.
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Old 05-06-2011, 04:08 PM   #7
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My new to me 95 has 3.07 gears and 35 inch tires. The previous owner said he put 24,000 miles on it and when I bought it, the rear end was bad. We replaced it with a used one($200) and it's good for now. I don't plan on hardcore mudding or serious rock crawling, just basic off road on occasion and around town as a spare vehicle and fun toy. I know I have to downshift a lot and spend a lot more time in 1st and 2nd gear than I'd prefer. My question is this, just what, if any damage can I expect from this setup or is it simply the limitations I already mentioned? I'd eventually like to swap for a 4.10 setup from a 2.5 ltr but for now, this is what I've got.
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Old 05-06-2011, 04:28 PM   #8
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I have a TJ but I recently regeared from 3.73 to 4.56 with 33" tires. What exactly is your budget? I had mine done professionally for $1200 out the door.
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Old 05-06-2011, 07:40 PM   #9
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Quote:
Originally Posted by Pingjockey
I just recently went from 3.07 to 4.56 in my 91 YJ running on the same tires... Amazing differences!! I went from barely being able to sustain 55 on the highway to holding 80 in fifth gear effortlessly. I still have plenty of low-end power also.

Most places here in Connecticut wanted to charge about +/- $2000. I found a guy here in CT that pointed me to Adams Drive Shaft out of Nevada (Adams Driveshaft, Inc. - Home) They sold me all the parts I needed for about $600. Then the mechanic here in CT installed them for $850 ($425/axle) all in all I saved around $600.

You will need Ring and Pinion gears front and rear, New Carrier for front and rear rebuild kits for front and rear. All of these I one stopped shopped from the website above and then I needed about 8 qts of 80/90W gear oil.

Because it cost so much if I had to do it again, I would but in the future I will buy a jeep that has already had the gears swapped out If you have big tires, new gears are a must!!
Who did the regear for you? that's a good price around here, Think he could help me out? I keep getting extremely High prices here too.
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Old 05-06-2011, 08:24 PM   #10
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I've got 4.88s in my '92 YJ with a 4.0, 33s and a manual tranny. It's perfect on and off road.
I've got 5.13s in my '03 Rubi with 35s and manual tranny. Honestly its just a little too low. I should have gone with 4.88s in it too.
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Old 05-06-2011, 08:43 PM   #11
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Quote:
Originally Posted by jakec
a few guys in my club went 8.8 and they love it. they were regularly breaking chromoly shafts in the d35 with 33s, but they were locked and running 4.88 gears. im going straight to 1 tons personally but i want 38s or 40s. if your going to stick to 33s or 35s a 8.8 will be good. a lot of them come with 4.10s and disc brakes also.
Wow some heavy footed people you roll with! Anyways a ford 8.8 is stronger (stock vs stock) than a dana 44. Now with a super 88 kit for the ford 8.8 its damn near as strong as a dana 60. You can easily run 37s with a v8 in a locked ford 8.8 with a super 88 kit. Some of the 8.8s that came with 4.10s have an lsd and all of them came with disc brakes after 97' ( I believe 97) here is a place for prebuilt 8.8s for wranglers http://eastcoastgearsupply.com/i-476...-assembly.html

If your gonna spend some money regear to 4.88s and throw a Superior super 35 kit for the dana 35 (if you want to keep your dana 35) with the kit from superior you can run 35s locked with that kit. If not, the least exspenxive root (as stated above) would be finding a pair of axles from a 4 banger yj, that has the 4.10s in it! Good luck!
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Old 05-07-2011, 11:47 PM   #12
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i have a 98 tj and it has stock 4.11s. i purchased 4.56s to replace them. im running a four banger in it now(what it already had in it). but i want to upgrade for more mudding power. not so much rockcrawler. any suggestions on what engine with the 4.56s

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